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523 results for “Sheep”
The ancestral origin of the critically endangered Quadricorna sheep as revealed by genome-wide analysis.
<p>These data were used in "The ancestral origin of the critically endangered Quadricorna sheep as revealed by genome-wide analysis" by Senczuk et al.</p> <p>ARSIAL.ped and ARSIAL.map contains genotypes information (64.734 SNPs) of 47 individuals of the Quadricorna breed in Plink ped format.</p>
Sheep Femur: EOA:2022.90
Sheep femur from the wreck of the Earl Of Abergavenny. ID: EOA:2022.90 Collection: Earl of Abergavenny Classification: Remains Measurements: Length 200mm Width 50mm Date made: as yet unknown Display: not on display Manufacturer/Creator: as yet unknown Credit: Portland Museum Trust Sheep were part of the livestock kept on board to feed high ranking crew and passengers. Unlike pork and beef, mutton was unsuitable for preservation by salting. Identified as Romney Marsh, or Old Kent breed, this type was chosen on the strength of its suitability/resistance to wet environments over the quality of its meat. Information courtesey of Ed Cumming and Dr Philip Armitage. For more information about the Diving into the Digital Archives of the Earl of Abergavenny project click [here](https://portlandmuseum.co.uk/earl-of-abergavenny/) Source: Objaverse 1.0 / Sketchfab
Cuneiform: Sheep (3)
Special Collections and University Archives - Colgate University Source: Objaverse 1.0 / Sketchfab
Community-based integrated animal health management to reduce the impact of cerebral Coenurosis in Bonga sheep in Kaffa zone, southwestern Ethiopia
<p>Coenurosis, a fatal parasitic disease, is widespread in the highlands of Ethiopia, where 75% of the country's sheep population is found. There is a significant prevalence of the disease in the current study area. Therefore, the current study was conducted to reduce the impact of cerebral coenurosis on sheep production in the study area by integrating different prevention and control options and raising community awareness of the disease. Questionnaire surveys, coproscopic examination of dog feces, and household-level surveillance were used to collect data on reported coenurosis cases and taeniid infections. Awareness creation training and regular dog deworming were used as an intervention to reduce the prevalence of the disease. A total of 107, 134, 153, and 124 dogs were dewormed during the first, second, third, and fourth rounds during the study period, respectively. Eggs were detected in 58.53% (95% CI 47.4- 68.86) of pre-deworming fecal samples of dogs. Eggs were detected in 24.18% (95% CI: 40.0–49.7) of the fecal samples after the intervention, 34.35% less than before the intervention. At the beginning of the intervention, the level of awareness of farmers in the intervention sites about the cause of the disease was 12.2%, which increased to 51.03% at the end of the intervention. The community-based integrated animal health management approach for coenurosis control has the potential to be expanded throughout the country, thus reducing economic losses in communities where the disease is endemic.</p>
Data from: Direct and indirect effects of cougar predation on bighorn sheep fitness
<div> <p>We sought to evaluate the direct and indirect fitness effects of intense cougar (<em>Puma concolor</em>) predation using 48 years of data on marked bighorn sheep (<em>Ovis canadensis</em>) in Ram Mountain, Alberta, Canada. We compared years of intense cougar predation with years with no or occasional cougar predation. We first quantified the effects of predation on neonatal, weaning, and overwinter lamb survival, three metrics potentially affected by direct and indirect effects. We then investigated the possible indirect effects of intense cougar predation on lamb production, female summer mass gain, and lamb mass at weaning. Indirect effects included a 14.2% decline in lamb production. Female summer mass gain decreased by 15.6 % and lamb mass at weaning declined by 8.0% in years of intense cougar predation. Here are the six datasets, joined with a README.md file for the data description, in addition to the six corresponding R scripts for replicating the results.</p> </div>
metaFlye assembly for the SHEEP dataset
Open the record for dataset details and reuse information.
Q fever in Egypt: Epidemiological survey of Coxiella burnetii specific antibodies in cattle, buffaloes, sheep, goats and camels
<p>Dataset complementing the publication "Q fever in Egypt: Epidemiological survey of <em>Coxiella burnetii</em> specific antibodies in cattle, buffaloes, sheep, goats and camels" (PLOS ONE, 2018).</p>
High Density Sheep Genotypes used for Aseasonal GWAS
<p>Illumina Ovine HD genotypes of 257 ewes used for an out of season lambing GWAS</p>
FIGURES 3–4 in Rumen Ciliate Fauna of Domestic Sheep in Kastamonu, Turkey, and Infraciliature of Diplodinium quinquespinosum, Metadinium affine, and M. tauricum (Entodiniomorphida, Ophryoscolecidae)
FIGURES 3–4. Photomicrographs of Metadinium affine. 3—after pyridinated silver carbonate impregnation from the left side, 4—in MFS from the right side. AP: adoral polybrachykinety, DP: dorsal polybrachykinety, SP: skeletal plates, VP: vestibular polybrachykinety.
Dataset for the article : Non-invasive estimation of in vivo optical properties and hemodynamic parameters of domestic animals: a preliminary study on horses, dogs, and sheep
<div> <div> <div> <div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <div> <p>This dataset includes all the necessary data to understand and replicate the figures and tables presented in the article titled "Non-invasive Estimation of In Vivo Optical Properties and Hemodynamic Parameters of Domestic Animals: A Preliminary Study on Horses, Dogs, and Sheep." Specifically, it contains the raw measurement curves, along with the optical and hemodynamic parameters derived from the analysis of these raw data.</p> </div> </div> </div> </div> </div> </div>
Data from: Whole-genome resequencing uncovers molecular signatures of natural and sexual selection in wild bighorn sheep
The identification of genes influencing fitness is central to our understanding of the genetic basis of adaptation and how it shapes phenotypic variation in wild populations. Here, we used whole-genome resequencing of wild Rocky Mountain bighorn sheep (Ovis canadensis) to >50-fold coverage to identify 2.8 million single nucleotide polymorphisms (SNPs) and genomic regions bearing signatures of directional selection (i.e. selective sweeps). A comparison of SNP diversity between the X chromosome and the autosomes indicated that bighorn males had a dramatically reduced long-term effective population size compared to females. This probably reflects a long history of intense sexual selection mediated by male–male competition for mates. Selective sweep scans based on heterozygosity and nucleotide diversity revealed evidence for a selective sweep shared across multiple populations at RXFP2, a gene that strongly affects horn size in domestic ungulates. The massive horns carried by bighorn rams appear to have evolved in part via strong positive selection at RXFP2. We identified evidence for selection within individual populations at genes affecting early body growth and cellular response to hypoxia; however, these must be interpreted more cautiously as genetic drift is strong within local populations and may have caused false positives. These results represent a rare example of strong genomic signatures of selection identified at genes with known function in wild populations of a nonmodel species. Our results also showcase the value of reference genome assemblies from agricultural or model species for studies of the genomic basis of adaptation in closely related wild taxa.
Data from: Selection and microevolution of coat pattern are cryptic in a wild population of sheep
Understanding the maintenance of genetic variation in natural populations is a core aim of evolutionary genetics. Insight can be gained by quantifying selection at the level of the genotype, as opposed to the phenotype. Here, we show that in a natural population of Soay sheep which is polymorphic for coat pattern, recessive genetic variants at the causal gene, agouti signalling protein (ASIP), are associated with reduced lifetime fitness. This was due primarily to a reduction in juvenile survival of uniformly coloured (self-type) sheep, which are homozygous recessive, and occurs despite significantly higher reproductive success in surviving self-type adults. Consistent with their relatively low fitness, we show that the frequency of self-type individuals has declined from 1985 to 2008. Remarkably though, the frequency of the underlying self-allele has increased, because the frequency of heterozygous individuals (who harbour the majority of all self alleles) has increased. Indeed, the ratio of observed:expected heterozygous individuals has increased during the study, such that there is now a significant excess of heterozygotyes. By employing gene-dropping simulations, we show that microevolutionary trends in the frequency and excess of ASIP heterozygotes are too pronounced to be caused by genetic drift. Studying this polymorphism at the level of phenotype rather than underlying genotype would have failed to detect cryptic fitness differences. We would also have been unable to rule out genetic drift as an evolutionary force driving genetic change. This highlights the importance of resolving the underlying genetic basis of phenotypic variation in explaining evolutionary dynamics.
Data from: The genetic legacy of 50 years of desert bighorn sheep translocations
Conservation biologists have increasingly used translocations to mitigate population declines and restore locally extirpated populations. Genetic data can guide the selection of source populations for translocations and help evaluate restoration success. Bighorn sheep (Ovis canadensis) are a managed big game species that suffered widespread population extirpations across western North America throughout the early 1900's. Subsequent translocation programs have successfully re-established many formally extirpated bighorn herds, but most of these programs pre-date genetically-informed management practices. The state of Nevada presents a particularly well-documented case of decline followed by restoration of extirpated herds. Desert bighorn sheep (O. c. nelsoni) populations declined to less than 3,000 individuals restricted to remnant herds in the Mojave Desert and a few locations in the Great Basin Desert. Beginning in 1968, the Nevada Department of Wildlife translocated ~2,000 individuals from remnant populations to restore previously extirpated areas, possibly establishing herds with mixed ancestries. Here we examined genetic diversity and structure among remnant herds and the genetic consequences of translocation from these herds using a genotyping-by-sequencing approach to genotype 17,095 loci in 303 desert bighorn sheep. We found a signal of population genetic structure among remnant Mojave Desert populations, even across geographically proximate mountain ranges. Further, we found evidence of a genetically distinct, potential relict herd from a previously hypothesized Great Basin lineage of desert bighorn sheep. The genetic structure of source herds was clearly reflected in translocated populations. In most cases, herds retained genetic evidence of multiple translocation events and subsequent admixture when founded from multiple remnant source herds. Our results add to a growing literature on how population genomic data can be used to guide and monitor restoration programs.
Vegetation responses to Soay sheep grazing on St Kilda
<p>1. The population of Soay sheep on the island of Hirta in the Outer Hebrides has been the subject of continuous study for more than 35 years. This paper focuses on the botanical aspects of the plant-herbivore interaction, showing how the vegetation affects and is affected by the sheep.</p> <p>2. Grazing impacts on biomass and spatial structure varied across plant communities, with <i>Holcus/Agrostis</i> grasslands affected most and Wet Heath least, consistent with the hypothesis that herbivore impacts are proportional to plant productivity.</p> <p>3. Within plant communities, the negative relationships between sheep numbers and plant abundance (sward height, gap/tussock cover and biomass) were significant in March but not significant in August, as expected if sheep numbers are limited by food supply in winter.</p> <p>4. In most species, flower stem density declined with increasing sheep numbers. There were no examples where unpalatable plants showed increased flowering (e.g. from competitor release under selective grazing).</p> <p>5. Plant production in temporary grazing exclosures (above ground net primary production) was greatest in <i>Holcus/Agrostis</i> grassland (12.6t/ha dry matter/year), lower in <i>Nardus</i> grassland (5.1t/ha/yr) and least in <i>Plantago </i>sward (1.3t/ha/yr) associated with differences in historical nutrient supply and microclimate. </p> <p>6. The net effect of grazing on plant species richness was positive: a few highly palatable species were excluded, but small-scale coexistence of grazing tolerant species was enhanced by defoliation.</p> <p>7. The Soay sheep population fluctuated from 908 (in 1988) to 2208 (in 2009), increasing by an average of 39 extra animals per year over the period 1985-2011. Between 2011 and 2020, the population fluctuated less widely and showed no trend.</p> <p>8. Population change (ln(N(t+1)/N(t)) was inversely density dependent but positively correlated with plant production in <i>Holcus/Agrostis</i> grassland which increased during the study.</p> <p>9. This plant-herbivore interaction is highly resilient, and though some species (<i>Festuca rubra</i> and <i>Ranunculus acris</i>) declined in the <i>Holcus/Agrostis</i> grassland, there was no significant upward trend in the abundance of unpalatable plant species.</p> <p>10. Implications for future studies and analyses of plant-herbivore data. Concentrating on estimating primary productivity and herbivore offtake, rather than simply measuring change in plant biomass, is likely to provide greatly improved explanatory power for understanding herbivore population dynamics.</p>
Fig. 1 in Sheep Dung Removal by Coexisting Rainbow Scarabs (Coleoptera: Scarabaeidae: Phanaeus MacLeay) under Experimental Laboratory Conditions
Fig. 1. Experimental setup. In Treatment 1 (T1) a pair of Phanaeus quadridens was placed; in T2 a pair of P. adonis was placed; in T3 six females of P. quadridens were placed; in T4 six females (two of P. adonis, two of P. palliatus, and two of P. quadridens) were placed. The bars on the graph represent mean values of dung removal; error lines are SD of the amount of sheep dung removed per individual in each treatment.
Fig. 2 in Sheep Dung Removal by Coexisting Rainbow Scarabs (Coleoptera: Scarabaeidae: Phanaeus MacLeay) under Experimental Laboratory Conditions
Fig. 2. Mean (± SD) of the amount (g) of sheep dung removed at 24 and 48 h after deposition by dung beetles in four treatments. Treatments as in Fig. 1. The asterisks indicate statistical differences (p <0.05) among the two periods of the same treatment in paired t tests.
Applying the double observer methodology for assessing blue sheep population size in Nar Phu Valley, Annapurna Conservation Area, Nepal
<p>This study was undertaken in spring, 2019 to assess the applicability of the Double-Observer survey method for estimating blue sheep <i>Pseudois nayaur</i> abundance in Nar-Phu valley of Manang District located in Annapurna Conservation Area of northern Nepal. Since counting large mammals in rugged mountain habitat poses a special challenge, we tested the efficacy of the Double Observer method for generating robust population estimates for this important protected area. The overall detection probability for observers (O1 and O2) was 0.94 and 0.91 for a total of 106 groups comprised of 2,059 individual blue sheep. We estimated the area's blue sheep population at 2,070 (SE<span> ±</span>168.77; 95% CI 2,059 – 2,405) for the 246.2 km² of sampled habitat. We determined blue sheep to be widely distributed within the study area with a mean density of 8.4 individuals per km<sup>2</sup> based on a total study area of 246.2 km<sup>2</sup>. We discuss demographic population structure and identify limitations when applying the <i>Double Observer</i> approach, along with recommending viewshed mapping for ensuring more robust density estimates of mountain-dwelling ungulates like blue sheep or ibex that inhabit extremely heterogeneous terrain which strongly influences sighting distances and overall animal detection rates.</p>
Video recording and vegetation classification elucidate sheep foraging ecology in species-rich grassland
<p>Dataset as Excel file</p>
Data for: Testing the match-mismatch hypothesis in bighorn sheep in the context of climate change
<p><span><span><span><span><span><span><span><span><span><span><span>In species with long gestation, females commit to reproduction several months before parturition. If cues driving conception date are uncoupled from spring conditions, parturition could be mistimed. Mismatch may increase with global change if the rate of temporal changes in autumn cues differs from the rate of change in spring conditions. Using 17 years of data on climate and vegetation phenology, we show that autumn temperature and precipitation, but not vegetation phenology, explain parturition date in bighorn sheep. Although autumn cues drive the timing of conception, they do not predict conditions at parturition in spring. We calculated the mismatch between individual parturition date and spring green-up, assessed whether mismatch increased over time and investigated the consequences of mismatch on lamb neonatal survival, weaning mass and overwinter survival. Mismatch fluctuated over time but showed no temporal trend. Temporal changes in green-up date did not lead to major fitness consequence of mismatch. Detailed data on individually marked animals revealed no effect of mismatch on neonatal or overwinter survival, but lamb weaning mass was negatively affected by mismatch. Capital breeders might be less sensitive to mismatch than income breeders because they are less dependent on daily food acquisition. Herbivores in seasonal environments may access sufficient forage to sustain lactation before or after the spring 'peak' green-up, and partly mitigate the consequences of a mismatch. Thus, the effect of phenological mismatch on fitness may be affected by species life-history, highlighting the complexity in quantifying trophic mismatches in the context of climate change. </span></span></span></span></span></span></span></span></span></span></span></p>
Fig. 4 in Adaptive use of nonlethal strategies for minimizing wolf-sheep conflict in Idaho
Fig. 4.—Killing of sheep (Ovis aries) by wolves (Canis lupus) in Protected and Nonprotected Areas in public grazing allotments in Blaine County, Idaho, as shown by cumulative weighted number of sheep killed in each year of the study. Lines indicate regression of killings on year.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.